diff --git a/configure.ac b/configure.ac
index 89b953d..38dd4a2 100644
--- configure.ac
+++ configure.ac
@@ -55,6 +55,9 @@ sdkdir=$(pkg-config --variable=sdkdir xorg-server)
 # Header files checks.
 AC_HEADER_STDC
 
+# Check if we have an alloca.h on this platform
+AC_CHECK_HEADERS([alloca.h])
+
 PKG_CHECK_MODULES(PCIUTILS, libpci,,
    [AC_MSG_WARN([libpci not registered in pkgconfig, will guess instead])
     test "x$PCIUTILS_CFLAGS$PCIUTILS_LIBS" = "x" && PCIUTILS_LIBS="-lpci -lz"
diff --git a/utils/conntest/rhd_conntest.c b/utils/conntest/rhd_conntest.c
index 9e2a0ae..8917a7a 100644
--- utils/conntest/rhd_conntest.c
+++ utils/conntest/rhd_conntest.c
@@ -38,11 +38,15 @@
 #include <pci/pci.h>
 #include <unistd.h>
 #include <stdlib.h>
-#include <alloca.h>
 
 #ifdef HAVE_CONFIG_H
 # include "config.h"
 #endif
+
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+
 #include "git_version.h"
 
 #ifndef ULONG